Home / 9,189.84-12,686.28-5,879.76

Finding the Fourth Proportional to 9,189.84, 12,686.28 and 5,879.76

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Solution

The fourth proportional to 9,189.84, 12,686.28 and 5,879.76 is: 8,116.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.84 : 12,686.28 = 5,879.76 : x
  2. Step 2: Convert to fraction form
    9,189.84/12,686.28 = 5,879.76/x
  3. Step 3: Cross multiply
    9,189.84x = 12,686.28 × 5,879.76
  4. Step 4: Simplify right side
    9,189.84x = 74,592,281.69
  5. Step 5: Solve for x
    x = 74,592,281.69/9,189.84
  6. Step 6: Final answer
    x = 8,116.82

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.